How can I determine the porosity, air flow resistivity, tortuosity, and other properties for my poro elastic materials?

Question: How can I determine the porosity, air flow resistivity, tortuosity,  and other properties for my poro elastic materials?

Answer: Apparently there is no material handbook that has these readily available, nor are suppliers publishing these values openly.

Fortunately, you can determine some of these properties through testing.

A colleague recommended two companies that provide testing services for porelastic materials and can help you obtain important properites such as porosity, air flow resistivity, and tortuosity.

• Core Laboratories 
• Mecanum
• Terratek Lab (Now under by Schlumberger)